use mysql db server

[iulusoy]

Use mysql engine to run the database in a separate container:

• better user and data scaling
• more security options
• separation of db and webserver
  Update tables to work for mysql (minimal example)

[codecov]

Codecov Report

Attention: Patch coverage is 96.87500% with 1 line in your changes missing coverage. Please review.

Project coverage is 89.84%. Comparing base (0760401) to head (8d12009).
Report is 3 commits behind head on main.

Files with missing lines	Patch %	Lines
src/app/website/models.py	96.29%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main       #6      +/-   ##
==========================================
+ Coverage   86.60%   89.84%   +3.23%     
==========================================
  Files           9        9              
  Lines         112      128      +16     
==========================================
+ Hits           97      115      +18     
+ Misses         15       13       -2     

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